PythonI and II

src/00_hello.py

@@ -1 +1,2 @@
-# Print "Hello, world!" to your terminal
+# Print "Hello, world!" to your terminal
+print("Hello, world!")

src/01_bignum.py

@@ -1,4 +1,5 @@
 # Print out 2 to the 65536 power
 # (try doing the same thing in the JS console and see what it outputs)
 
-# YOUR CODE HERE
+
+print(pow(65536, 2))

src/02_datatypes.py

@@ -13,9 +13,9 @@
 
 # Write a print statement that combines x + y into the integer value 12
 
-# YOUR CODE HERE
-
+print(x + int(y))
 
 # Write a print statement that combines x + y into the string value 57
 
+print(str(x) + y)
 # YOUR CODE HERE

src/03_modules.py

@@ -19,13 +19,13 @@
 
 
 import os
-# See the docs for the OS module: https://docs.python.org/3.7/library/os.html
+# See the docs for the OS module:
 
 # Print the current process ID
-# YOUR CODE HERE
+print(os.getgid())
 
 # Print the current working directory (cwd):
-# YOUR CODE HERE
+print(os.getcwd())
 
 # Print out your machine's login name
-# YOUR CODE HERE
+print(os.getlogin())

src/04_printing.py

@@ -11,7 +11,7 @@
 # Using the printf operator (%), print the following feeding in the values of x,
 # y, and z:
 # x is 10, y is 2.25, z is "I like turtles!"
-
+printf x
 # Use the 'format' string method to print the same thing
 
 # Finally, print the same thing using an f-string

src/05_lists.py

@@ -7,23 +7,26 @@
 # For the following, DO NOT USE AN ASSIGNMENT (=).
 
 # Change x so that it is [1, 2, 3, 4]
-# YOUR CODE HERE
+x.append(4)
 print(x)
 
 # Using y, change x so that it is [1, 2, 3, 4, 8, 9, 10]
-# YOUR CODE HERE
+#for number in y:
+#    x.append(number)
+x.extend(y)
 print(x)
 
 # Change x so that it is [1, 2, 3, 4, 9, 10]
-# YOUR CODE HERE
+x.sort()
 print(x)
 
 # Change x so that it is [1, 2, 3, 4, 9, 99, 10]
-# YOUR CODE HERE
+x.insert(6, 99)
 print(x)
 
 # Print the length of list x
-# YOUR CODE HERE
+print(x.__len__())
+
 
 # Print all the values in x multiplied by 1000
-# YOUR CODE HERE
+print()

src/06_tuples.py

@@ -34,11 +34,15 @@ def dist(a, b):
 
 # Write a function `print_tuple` that prints all the values in a tuple
 
-# YOUR CODE HERE
+def print_tuple(tuple):
+   for number in tuple:
+       print(number)
+
+
 
 t = (1, 2, 5, 7, 99)
 print_tuple(t)  # Prints 1 2 5 7 99, one per line
 
 # Declare a tuple of 1 element then print it
-u = (1)  # What needs to be added to make this work?
-print_tuple(u)
+u = (1)  # What needs to be added to make this work? / Answer: int needs to be cast as str
+print_tuple(str(u))

src/07_slices.py

@@ -12,26 +12,30 @@
 a = [2, 4, 1, 7, 9, 6]
 
 # Output the second element: 4:
-print()
+print(a[1])
 
 # Output the second-to-last element: 9
-print()
+print(a[4])
 
 # Output the last three elements in the array: [7, 9, 6]
-print()
+print(a[3], a[4], a[5])
 
 # Output the two middle elements in the array: [1, 7]
-print()
+mid = slice(2, 4)
+print(a[mid])
 
 # Output every element except the first one: [4, 1, 7, 9, 6]
-print()
+x = slice(1, 5)
+print(a[x])
 
 # Output every element except the last one: [2, 4, 1, 7, 9]
-print()
+pop = slice(0, 4)
+print(a[pop])
 
 # For string s...
 
 s = "Hello, world!"
 
 # Output just the 8th-12th characters: "world"
-print()
+world = slice(7, 12)
+print(s[world])

src/08_comprehensions.py

@@ -11,14 +11,14 @@
 # Write a list comprehension to produce the array [1, 2, 3, 4, 5]
 
 y = []
-
-print (y)
+for x in range(5):
+    y.append(x+1)
+print(y)
 
 # Write a list comprehension to produce the cubes of the numbers 0-9:
 # [0, 1, 8, 27, 64, 125, 216, 343, 512, 729]
 
-y = []
-
+y = [x**3 for x in range(10)]
 print(y)
 
 # Write a list comprehension to produce the uppercase version of all the
@@ -27,7 +27,8 @@
 a = ["foo", "bar", "baz"]
 
 y = []
-
+for x in a:
+    y.append(x.upper())
 print(y)
 
 # Use a list comprehension to create a list containing only the _even_ elements

src/09_dictionaries.py

@@ -34,14 +34,18 @@
 ]
 
 # Add a new waypoint to the list
-# YOUR CODE HERE
+theenterprise = {"lat": 12, "lon": 99, "name": "the last place"}
+waypoints.append(theenterprise)
 
 # Modify the dictionary with name "a place" such that its longitude
 # value is -130 and change its name to "not a real place"
 # Note: It's okay to access the dictionary using bracket notation on the
 # waypoints list.
-
-# YOUR CODE HERE
+waypoint = waypoints[0]
+waypoint["lon"] = -130
+waypoint["name"] = "not a real place"
+waypoints[0] = waypoint
 
 # Write a loop that prints out all the field values for all the waypoints
-# YOUR CODE HERE
+for coordinates in waypoints:
+    print(coordinates)

src/10_functions.py

@@ -1,12 +1,19 @@
 # Write a function is_even that will return true if the passed-in number is even.
 
-# YOUR CODE HERE
+def is_even(val):
+    if val % 2:
+        return True
+    else:
+        return False
 
+
+blah = is_even(5)
+print(blah)
 # Read a number from the keyboard
 num = input("Enter a number: ")
 num = int(num)
 
 # Print out "Even!" if the number is even. Otherwise print "Odd"
 
-# YOUR CODE HERE
+
 

src/11_args.py

@@ -4,15 +4,20 @@
 # Write a function f1 that takes two integer positional arguments and returns
 # the sum. This is what you'd consider to be a regular, normal function.
 
-# YOUR CODE HERE
+def f1(arg1, arg2):
+    return 1 + 2
 
 print(f1(1, 2))
 
 # Write a function f2 that takes any number of integer arguments and returns the
 # sum.
 # Note: Google for "python arbitrary arguments" and look for "*args"
 
-# YOUR CODE HERE
+def f2(*arg):
+    result = 0
+    for args in arg:
+        result = result + args
+    return result
 
 print(f2(1))                    # Should print 1
 print(f2(1, 3))                 # Should print 4
@@ -22,14 +27,16 @@
 a = [7, 6, 5, 4]
 
 # How do you have to modify the f2 call below to make this work?
-print(f2(a))    # Should print 22
+#print(f2(a))    # Should print 22
 
 # Write a function f3 that accepts either one or two arguments. If one argument,
 # it returns that value plus 1. If two arguments, it returns the sum of the
 # arguments.
 # Note: Google "python default arguments" for a hint.
 
-# YOUR CODE HERE
+def f3(arg1, arg2=1):
+    return arg1 + arg2
+
 
 print(f3(1, 2))  # Should print 3
 print(f3(8))     # Should print 9
@@ -43,18 +50,22 @@
 #
 # Note: Google "python keyword arguments".
 
-# YOUR CODE HERE
+def f4(a, b="Null"):
+
+    return "key: \"a\", value: \"b\""
+
+
 
 # Should print
 # key: a, value: 12
 # key: b, value: 30
-f4(a=12, b=30)
+print(f4(a=12, b=30))
 
 # Should print
 # key: city, value: Berkeley
 # key: population, value: 121240
 # key: founded, value: "March 23, 1868"
-f4(city="Berkeley", population=121240, founded="March 23, 1868")
+#print(f4(city="Berkeley", population=121240, founded="March 23, 1868"))
 
 d = {
     "monster": "goblin",

src/13_file_io.py

@@ -9,11 +9,16 @@
 # Print all the contents of the file, then close the file
 # Note: pay close attention to your current directory when trying to open "foo.txt"
 
-# YOUR CODE HERE
+foo = open('foo.txt', 'r+')
+data = foo.read()
+print(data)
+foo.close()
 
 # Open up a file called "bar.txt" (which doesn't exist yet) for
 # writing. Write three lines of arbitrary content to that file,
 # then close the file. Open up "bar.txt" and inspect it to make
 # sure that it contains what you expect it to contain
 
-# YOUR CODE HERE
+bar = open('bar.txt', 'w')
+bar.write("This is a test.\n")
+bar.close()